Phone Value Calculator
Custom Rate
Apple iPhone (High Retention)
Android Flagship (Samsung S/Pixel)
Budget/Mid-Range Android
Based on declining balance method.
Current Market Value:
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Total Value Lost:
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Depreciation Percentage:
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Monthly Cost of Ownership:
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How Mobile Phone Depreciation Works
Unlike real estate or collectibles, mobile phones are rapidly depreciating assets. From the moment you unbox a new smartphone, its market value begins to decline. This calculator helps you estimate the current resale value of your device based on its original price, age, and typical industry depreciation rates.
Why Do Phones Lose Value So Quickly?
Several factors contribute to the steep decline in smartphone value:
- Technological Obsolescence: Manufacturers release new models annually with faster processors, better cameras, and improved battery life, making older models less desirable.
- Battery Degradation: Lithium-ion batteries degrade over time. A phone that is two years old will significantly lag in battery performance compared to a new one.
- Software Support: As phones age, they eventually stop receiving OS updates and security patches, drastically reducing their utility and resale value.
- Physical Wear: Scratches, screen burn-in, and dented frames reduce the aesthetic appeal and grade of the device.
iPhone vs. Android Depreciation Rates
Not all phones depreciate at the same speed. Historically, Apple iPhones retain their value longer than their Android counterparts. This is largely due to Apple's extended software support (often 5-6 years) and high brand demand in the used market.
| Device Type | Year 1 Depreciation | Year 2 Depreciation |
|---|---|---|
| Apple iPhone | ~25% – 40% | ~15% – 20% |
| Android Flagship | ~40% – 55% | ~20% – 25% |
| Budget Android | ~50% – 70% | ~25% – 30% |
The Math Behind the Calculator
This calculator uses a Declining Balance method to estimate value. Instead of losing a fixed dollar amount every month, the phone loses a percentage of its remaining value. This reflects reality: a phone loses the most value in the first few months, and the curve flattens out as the device gets older.
The Formula:
Current Value = Original Price × (1 - Annual Rate)^(Years Owned)
Tips to Maximize Resale Value
If you plan to sell or trade in your phone in the future, follow these steps to minimize depreciation:
- Use a Case and Screen Protector: Physical condition is the #1 factor in trade-in grading.
- Keep the Box and Accessories: Selling a phone "Complete in Box" (CIB) often commands a premium on private markets like eBay or Swappa.
- Sell Before the New Model Launch: Prices plummet immediately after the manufacturer announces the next generation. Sell your old phone 2-3 weeks before the new release event.